nacos springcloud dubbo连接错误：Fail to connect to HeaderExchangeClient

DUBBO] Fail to connect to HeaderExchangeClient [channel=org.apache.dubbo.remoting.transport.netty4.NettyClient [/10.10.10.81:64327 -> /10.10.10.81:20881]], dubbo version: 2.7.6, current host: 10.10.10.81

org.apache.dubbo.remoting.RemotingException: client(url: dubbo://10.10.10.81:20881/com.alibaba.cloud.dubbo.service.DubboMetadataService?anyhost=true&application=dubbo-service2&bind.ip=10.10.10.81&bind.port=20881&check=false&codec=dubbo&deprecated=false&dubbo=2.0.2&dynamic=true&generic=true&group=dubbo-service1&heartbeat=60000&interface=com.alibaba.cloud.dubbo.service.DubboMetadataService&methods=getAllServiceKeys,getServiceRestMetadata,getExportedURLs,getAllExportedURLs&pid=9968&qos.enable=false&register.ip=10.10.10.81&release=2.7.6&remote.application=dubbo-service1&revision=2.2.1.RELEASE&side=consumer&sticky=false&timestamp=1601126232991&version=1.0.0) failed to connect to server /10.10.10.81:20881 client-side timeout 3000ms (elapsed: 3014ms) from netty client 10.10.10.81 using dubbo version 2.7.6
at org.apache.dubbo.remoting.transport.netty4.NettyClient.doConnect(NettyClient.java:174) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.remoting.transport.AbstractClient.connect(AbstractClient.java:191) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.remoting.transport.AbstractClient.reconnect(AbstractClient.java:247) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeClient.reconnect(HeaderExchangeClient.java:166) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.remoting.exchange.support.header.ReconnectTimerTask.doTask(ReconnectTimerTask.java:49) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.remoting.exchange.support.header.AbstractTimerTask.run(AbstractTimerTask.java:87) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.common.timer.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:648) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.common.timer.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:727) ~[dubbo-2.7.6.jar:2.7.6]
at org.apache.dubbo.common.timer.HashedWheelTimer$Worker.run(HashedWheelTimer.java:449) ~[dubbo-2.7.6.jar:2.7.6]
at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]

服务访问错误{"timestamp":"2020-09-26T16:44:04.530+0000","status":500,"error":"Internal Server Error","message":"Failed to invoke the method getService1 in the service com.yf.service1.api.Service1. Tried 3 times of the providers [10.10.10.81:20881] (1/1) from the registry localhost:9090 on the consumer 10.10.10.81 using the dubbo version 2.7.6. Last error is: Failed to invoke remote method: getService1, provider: dubbo://10.10.10.81:20881/com.yf.service1.api.Service1?anyhost=true&application=dubbo-consumer&check=false&deprecated=false&dubbo=2.0.2&dynamic=true&generic=false&init=false&interface=com.yf.service1.api.Service1&methods=getService1&pid=7184&qos.enable=false&register.ip=10.10.10.81&release=2.7.6&remote.application=dubbo-service1&side=consumer&sticky=false&timestamp=1601126232543, cause: client(url: dubbo://10.10.10.81:20881/com.alibaba.cloud.dubbo.service.DubboMetadataService?_client_memo=referencecounthandler.replacewithlazyclient&anyhost=true&application=dubbo-consumer&bind.ip=10.10.10.81&bind.port=20881&check=false&codec=dubbo&connect.lazy.initial.state=true&deprecated=false&dubbo=2.0.2&dynamic=true&generic=true&group=dubbo-service1&heartbeat=60000&interface=com.alibaba.cloud.dubbo.service.DubboMetadataService&lazyclient_request_with_warning=true&methods=getAllServiceKeys,getServiceRestMetadata,getExportedURLs,getAllExportedURLs&pid=7184&qos.enable=false&reconnect=false&register.ip=10.10.10.81&release=2.7.6&remote.application=dubbo-service1&revision=2.2.1.RELEASE&send.reconnect=true&side=consumer&sticky=false&timestamp=1601126232991&version=1.0.0&warning=true) failed to connect to server /10.10.10.81:20881 client-side timeout 3000ms (elapsed: 3012ms) from netty client 10.10.10.81 using dubbo version 2.7.6","path":"/service1"}

原因：ip切换所致，新IP已注册，老的IP已执行Unregister后, 消费者依然调用生产者老的IP

解决：重启nacos以及重启应用